单项选择题
A．It is a kind of computer games. B．It is an area. C．It is the place where you can play the computer games cheaply. D．It is a park.
A．They connect invisible phenomena to those we are familiar with. B．Scientists could not experiment without them. C．They give the scientist a sense of security. D．They provide deeper insight into the workings of the human min
A．Lebanon’s university systems. B．American university systems. C．Differences between American and Lebanese university system. D．University systems.